mirror of
https://github.com/1f349/dendrite.git
synced 2024-11-09 22:42:58 +00:00
Improve federation sender performance, implement backoff and blacklisting, fix up invites a bit (#1007)
* Improve federation sender performance and behaviour, add backoff * Tweaks * Tweaks * Tweaks * Take copies of events before passing to destination queues * Don't accidentally drop queued messages * Don't take copies again * Tidy up a bit * Break out statistics (tracked component-wide), report success and failures from Perform actions * Fix comment, use atomic add * Improve logic a bit, don't block on wakeup, move idle check * Don't retry sucessful invites, don't dispatch sendEvent, sendInvite etc * Dedupe destinations, fix other bug hopefully * Dispatch sends again * Federation sender to ignore invites that are destined locally * Loopback invite events * Remodel a bit with channels * Linter * Only loopback invite event if we know the room * We should tell other resident servers about the invite if we know about the room * Correct invite signing * Fix invite loopback * Check HTTP response codes, push new invites to front of queue * Review comments
This commit is contained in:
parent
3b98535dc5
commit
a16db1c408
@ -188,11 +188,30 @@ func (s *OutputRoomEventConsumer) processInvite(oie api.OutputNewInviteEvent) er
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return nil
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}
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// Ignore invites that don't have state keys - they are invalid.
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if oie.Event.StateKey() == nil {
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return fmt.Errorf("event %q doesn't have state key", oie.Event.EventID())
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}
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// Don't try to handle events that are actually destined for us.
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stateKey := *oie.Event.StateKey()
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_, destination, err := gomatrixserverlib.SplitID('@', stateKey)
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if err != nil {
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log.WithFields(log.Fields{
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"event_id": oie.Event.EventID(),
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"state_key": stateKey,
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}).Info("failed to split destination from state key")
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return nil
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}
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if s.cfg.Matrix.ServerName == destination {
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return nil
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}
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// Try to extract the room invite state. The roomserver will have stashed
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// this for us in invite_room_state if it didn't already exist.
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strippedState := []gomatrixserverlib.InviteV2StrippedState{}
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if inviteRoomState := gjson.GetBytes(oie.Event.Unsigned(), "invite_room_state"); inviteRoomState.Exists() {
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if err := json.Unmarshal([]byte(inviteRoomState.Raw), &strippedState); err != nil {
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if err = json.Unmarshal([]byte(inviteRoomState.Raw), &strippedState); err != nil {
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log.WithError(err).Warn("failed to extract invite_room_state from event unsigned")
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}
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}
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@ -24,6 +24,7 @@ import (
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"github.com/matrix-org/dendrite/federationsender/producers"
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"github.com/matrix-org/dendrite/federationsender/queue"
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"github.com/matrix-org/dendrite/federationsender/storage"
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"github.com/matrix-org/dendrite/federationsender/types"
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roomserverAPI "github.com/matrix-org/dendrite/roomserver/api"
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"github.com/matrix-org/gomatrixserverlib"
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"github.com/sirupsen/logrus"
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@ -42,9 +43,14 @@ func SetupFederationSenderComponent(
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logrus.WithError(err).Panic("failed to connect to federation sender db")
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}
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roomserverProducer := producers.NewRoomserverProducer(rsAPI, base.Cfg.Matrix.ServerName)
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roomserverProducer := producers.NewRoomserverProducer(
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rsAPI, base.Cfg.Matrix.ServerName, base.Cfg.Matrix.KeyID, base.Cfg.Matrix.PrivateKey,
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)
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queues := queue.NewOutgoingQueues(base.Cfg.Matrix.ServerName, federation, roomserverProducer)
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statistics := &types.Statistics{}
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queues := queue.NewOutgoingQueues(
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base.Cfg.Matrix.ServerName, federation, roomserverProducer, statistics,
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)
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rsConsumer := consumers.NewOutputRoomEventConsumer(
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base.Cfg, base.KafkaConsumer, queues,
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@ -63,6 +69,7 @@ func SetupFederationSenderComponent(
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queryAPI := internal.NewFederationSenderInternalAPI(
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federationSenderDB, base.Cfg, roomserverProducer, federation, keyRing,
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statistics,
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)
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queryAPI.SetupHTTP(http.DefaultServeMux)
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@ -9,6 +9,7 @@ import (
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"github.com/matrix-org/dendrite/federationsender/api"
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"github.com/matrix-org/dendrite/federationsender/producers"
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"github.com/matrix-org/dendrite/federationsender/storage"
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"github.com/matrix-org/dendrite/federationsender/types"
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"github.com/matrix-org/gomatrixserverlib"
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"github.com/matrix-org/util"
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)
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@ -18,6 +19,7 @@ type FederationSenderInternalAPI struct {
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api.FederationSenderInternalAPI
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db storage.Database
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cfg *config.Dendrite
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statistics *types.Statistics
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producer *producers.RoomserverProducer
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federation *gomatrixserverlib.FederationClient
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keyRing *gomatrixserverlib.KeyRing
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@ -28,6 +30,7 @@ func NewFederationSenderInternalAPI(
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producer *producers.RoomserverProducer,
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federation *gomatrixserverlib.FederationClient,
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keyRing *gomatrixserverlib.KeyRing,
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statistics *types.Statistics,
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) *FederationSenderInternalAPI {
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return &FederationSenderInternalAPI{
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db: db,
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@ -35,6 +38,7 @@ func NewFederationSenderInternalAPI(
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producer: producer,
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federation: federation,
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keyRing: keyRing,
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statistics: statistics,
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}
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}
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@ -25,10 +25,12 @@ func (r *FederationSenderInternalAPI) PerformDirectoryLookup(
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request.RoomAlias,
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)
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if err != nil {
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r.statistics.ForServer(request.ServerName).Failure()
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return err
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}
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response.RoomID = dir.RoomID
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response.ServerNames = dir.Servers
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r.statistics.ForServer(request.ServerName).Success()
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return nil
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}
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@ -61,6 +63,7 @@ func (r *FederationSenderInternalAPI) PerformJoin(
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)
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if err != nil {
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// TODO: Check if the user was not allowed to join the room.
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r.statistics.ForServer(serverName).Failure()
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return fmt.Errorf("r.federation.MakeJoin: %w", err)
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}
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@ -112,6 +115,7 @@ func (r *FederationSenderInternalAPI) PerformJoin(
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)
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if err != nil {
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logrus.WithError(err).Warnf("r.federation.SendJoin failed")
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r.statistics.ForServer(serverName).Failure()
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continue
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}
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@ -137,6 +141,7 @@ func (r *FederationSenderInternalAPI) PerformJoin(
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}
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// We're all good.
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r.statistics.ForServer(serverName).Success()
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return nil
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}
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@ -170,6 +175,7 @@ func (r *FederationSenderInternalAPI) PerformLeave(
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if err != nil {
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// TODO: Check if the user was not allowed to leave the room.
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logrus.WithError(err).Warnf("r.federation.MakeLeave failed")
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r.statistics.ForServer(serverName).Failure()
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continue
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}
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@ -221,9 +227,11 @@ func (r *FederationSenderInternalAPI) PerformLeave(
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)
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if err != nil {
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logrus.WithError(err).Warnf("r.federation.SendLeave failed")
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r.statistics.ForServer(serverName).Failure()
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continue
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}
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r.statistics.ForServer(serverName).Success()
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return nil
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}
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@ -16,6 +16,7 @@ package producers
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import (
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"context"
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"crypto/ed25519"
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"github.com/matrix-org/dendrite/roomserver/api"
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"github.com/matrix-org/gomatrixserverlib"
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@ -25,15 +26,20 @@ import (
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type RoomserverProducer struct {
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InputAPI api.RoomserverInternalAPI
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serverName gomatrixserverlib.ServerName
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keyID gomatrixserverlib.KeyID
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privateKey ed25519.PrivateKey
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}
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// NewRoomserverProducer creates a new RoomserverProducer
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func NewRoomserverProducer(
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rsAPI api.RoomserverInternalAPI, serverName gomatrixserverlib.ServerName,
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keyID gomatrixserverlib.KeyID, privateKey ed25519.PrivateKey,
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) *RoomserverProducer {
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return &RoomserverProducer{
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InputAPI: rsAPI,
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serverName: serverName,
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keyID: keyID,
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privateKey: privateKey,
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}
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}
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@ -43,7 +49,7 @@ func NewRoomserverProducer(
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func (c *RoomserverProducer) SendInviteResponse(
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ctx context.Context, res gomatrixserverlib.RespInviteV2, roomVersion gomatrixserverlib.RoomVersion,
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) (string, error) {
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ev := res.Event.Headered(roomVersion)
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ev := res.Event.Sign(string(c.serverName), c.keyID, c.privateKey).Headered(roomVersion)
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ire := api.InputRoomEvent{
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Kind: api.KindNew,
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Event: ev,
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@ -18,12 +18,13 @@ import (
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"context"
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"encoding/json"
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"fmt"
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"sync"
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"time"
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"github.com/matrix-org/dendrite/federationsender/producers"
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"github.com/matrix-org/dendrite/federationsender/types"
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"github.com/matrix-org/gomatrix"
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"github.com/matrix-org/gomatrixserverlib"
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"github.com/matrix-org/util"
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"github.com/sirupsen/logrus"
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log "github.com/sirupsen/logrus"
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"go.uber.org/atomic"
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)
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@ -33,92 +34,190 @@ import (
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// ensures that only one request is in flight to a given destination
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// at a time.
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type destinationQueue struct {
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rsProducer *producers.RoomserverProducer
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client *gomatrixserverlib.FederationClient
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origin gomatrixserverlib.ServerName
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destination gomatrixserverlib.ServerName
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running atomic.Bool
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// The running mutex protects sentCounter, lastTransactionIDs and
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// pendingEvents, pendingEDUs.
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runningMutex sync.Mutex
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sentCounter int
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lastTransactionIDs []gomatrixserverlib.TransactionID
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pendingEvents []*gomatrixserverlib.HeaderedEvent
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pendingEDUs []*gomatrixserverlib.EDU
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pendingInvites []*gomatrixserverlib.InviteV2Request
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rsProducer *producers.RoomserverProducer // roomserver producer
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client *gomatrixserverlib.FederationClient // federation client
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origin gomatrixserverlib.ServerName // origin of requests
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destination gomatrixserverlib.ServerName // destination of requests
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running atomic.Bool // is the queue worker running?
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statistics *types.ServerStatistics // statistics about this remote server
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incomingPDUs chan *gomatrixserverlib.HeaderedEvent // PDUs to send
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incomingEDUs chan *gomatrixserverlib.EDU // EDUs to send
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incomingInvites chan *gomatrixserverlib.InviteV2Request // invites to send
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lastTransactionIDs []gomatrixserverlib.TransactionID // last transaction ID
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pendingPDUs []*gomatrixserverlib.HeaderedEvent // owned by backgroundSend
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pendingEDUs []*gomatrixserverlib.EDU // owned by backgroundSend
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pendingInvites []*gomatrixserverlib.InviteV2Request // owned by backgroundSend
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}
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// Send event adds the event to the pending queue for the destination.
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// If the queue is empty then it starts a background goroutine to
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// start sending events to that destination.
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func (oq *destinationQueue) sendEvent(ev *gomatrixserverlib.HeaderedEvent) {
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oq.runningMutex.Lock()
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defer oq.runningMutex.Unlock()
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oq.pendingEvents = append(oq.pendingEvents, ev)
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if oq.statistics.Blacklisted() {
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// If the destination is blacklisted then drop the event.
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return
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}
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if !oq.running.Load() {
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go oq.backgroundSend()
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}
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oq.incomingPDUs <- ev
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}
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// sendEDU adds the EDU event to the pending queue for the destination.
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// If the queue is empty then it starts a background goroutine to
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// start sending events to that destination.
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func (oq *destinationQueue) sendEDU(e *gomatrixserverlib.EDU) {
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oq.runningMutex.Lock()
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defer oq.runningMutex.Unlock()
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oq.pendingEDUs = append(oq.pendingEDUs, e)
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func (oq *destinationQueue) sendEDU(ev *gomatrixserverlib.EDU) {
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if oq.statistics.Blacklisted() {
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// If the destination is blacklisted then drop the event.
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return
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}
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if !oq.running.Load() {
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go oq.backgroundSend()
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}
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oq.incomingEDUs <- ev
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}
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// sendInvite adds the invite event to the pending queue for the
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// destination. If the queue is empty then it starts a background
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// goroutine to start sending events to that destination.
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func (oq *destinationQueue) sendInvite(ev *gomatrixserverlib.InviteV2Request) {
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oq.runningMutex.Lock()
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defer oq.runningMutex.Unlock()
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oq.pendingInvites = append(oq.pendingInvites, ev)
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if oq.statistics.Blacklisted() {
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// If the destination is blacklisted then drop the event.
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return
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}
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if !oq.running.Load() {
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go oq.backgroundSend()
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}
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oq.incomingInvites <- ev
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}
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// backgroundSend is the worker goroutine for sending events.
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// nolint:gocyclo
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func (oq *destinationQueue) backgroundSend() {
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oq.running.Store(true)
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// Check if a worker is already running, and if it isn't, then
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// mark it as started.
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if !oq.running.CAS(false, true) {
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return
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}
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defer oq.running.Store(false)
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for {
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transaction, invites := oq.nextTransaction(), oq.nextInvites()
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if !transaction && !invites {
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// If the queue is empty then stop processing for this destination.
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// TODO: Remove this destination from the queue map.
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// Wait either for incoming events, or until we hit an
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// idle timeout.
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select {
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case pdu := <-oq.incomingPDUs:
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// Ordering of PDUs is important so we add them to the end
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// of the queue and they will all be added to transactions
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// in order.
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oq.pendingPDUs = append(oq.pendingPDUs, pdu)
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case edu := <-oq.incomingEDUs:
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// Likewise for EDUs, although we should probably not try
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// too hard with some EDUs (like typing notifications) after
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// a certain amount of time has passed.
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// TODO: think about EDU expiry some more
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oq.pendingEDUs = append(oq.pendingEDUs, edu)
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case invite := <-oq.incomingInvites:
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// There's no strict ordering requirement for invites like
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// there is for transactions, so we put the invite onto the
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// front of the queue. This means that if an invite that is
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// stuck failing already, that it won't block our new invite
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// from being sent.
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oq.pendingInvites = append(
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[]*gomatrixserverlib.InviteV2Request{invite},
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oq.pendingInvites...,
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)
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case <-time.After(time.Second * 30):
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// The worker is idle so stop the goroutine. It'll
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// get restarted automatically the next time we
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// get an event.
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return
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}
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// TODO: handle retries.
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// TODO: blacklist uncooperative servers.
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// If we are backing off this server then wait for the
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// backoff duration to complete first.
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if backoff, duration := oq.statistics.BackoffDuration(); backoff {
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<-time.After(duration)
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}
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// How many things do we have waiting?
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numPDUs := len(oq.pendingPDUs)
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numEDUs := len(oq.pendingEDUs)
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numInvites := len(oq.pendingInvites)
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// If we have pending PDUs or EDUs then construct a transaction.
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if numPDUs > 0 || numEDUs > 0 {
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// Try sending the next transaction and see what happens.
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transaction, terr := oq.nextTransaction(oq.pendingPDUs, oq.pendingEDUs, oq.statistics.SuccessCount())
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if terr != nil {
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// We failed to send the transaction.
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if giveUp := oq.statistics.Failure(); giveUp {
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// It's been suggested that we should give up because
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// the backoff has exceeded a maximum allowable value.
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return
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}
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} else if transaction {
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// If we successfully sent the transaction then clear out
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// the pending events and EDUs.
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oq.statistics.Success()
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// Reallocate so that the underlying arrays can be GC'd, as
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// opposed to growing forever.
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for i := 0; i < numPDUs; i++ {
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oq.pendingPDUs[i] = nil
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}
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for i := 0; i < numEDUs; i++ {
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oq.pendingEDUs[i] = nil
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}
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oq.pendingPDUs = append(
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[]*gomatrixserverlib.HeaderedEvent{},
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oq.pendingPDUs[numPDUs:]...,
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)
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oq.pendingEDUs = append(
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[]*gomatrixserverlib.EDU{},
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oq.pendingEDUs[numEDUs:]...,
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)
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}
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}
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// Try sending the next invite and see what happens.
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if numInvites > 0 {
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sent, ierr := oq.nextInvites(oq.pendingInvites)
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if ierr != nil {
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// We failed to send the transaction so increase the
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// backoff and give it another go shortly.
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if giveUp := oq.statistics.Failure(); giveUp {
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// It's been suggested that we should give up because
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// the backoff has exceeded a maximum allowable value.
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return
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}
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} else if sent > 0 {
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// If we successfully sent the invites then clear out
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// the pending invites.
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oq.statistics.Success()
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// Reallocate so that the underlying array can be GC'd, as
|
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// opposed to growing forever.
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oq.pendingInvites = append(
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[]*gomatrixserverlib.InviteV2Request{},
|
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oq.pendingInvites[sent:]...,
|
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)
|
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}
|
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}
|
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}
|
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}
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|
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// nextTransaction creates a new transaction from the pending event
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// queue and sends it. Returns true if a transaction was sent or
|
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// false otherwise.
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func (oq *destinationQueue) nextTransaction() bool {
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oq.runningMutex.Lock()
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defer oq.runningMutex.Unlock()
|
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|
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if len(oq.pendingEvents) == 0 && len(oq.pendingEDUs) == 0 {
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return false
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}
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|
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func (oq *destinationQueue) nextTransaction(
|
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pendingPDUs []*gomatrixserverlib.HeaderedEvent,
|
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pendingEDUs []*gomatrixserverlib.EDU,
|
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sentCounter uint32,
|
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) (bool, error) {
|
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t := gomatrixserverlib.Transaction{
|
||||
PDUs: []json.RawMessage{},
|
||||
EDUs: []gomatrixserverlib.EDU{},
|
||||
}
|
||||
now := gomatrixserverlib.AsTimestamp(time.Now())
|
||||
t.TransactionID = gomatrixserverlib.TransactionID(fmt.Sprintf("%d-%d", now, oq.sentCounter))
|
||||
t.TransactionID = gomatrixserverlib.TransactionID(fmt.Sprintf("%d-%d", now, sentCounter))
|
||||
t.Origin = oq.origin
|
||||
t.Destination = oq.destination
|
||||
t.OriginServerTS = now
|
||||
@ -129,44 +228,54 @@ func (oq *destinationQueue) nextTransaction() bool {
|
||||
|
||||
oq.lastTransactionIDs = []gomatrixserverlib.TransactionID{t.TransactionID}
|
||||
|
||||
for _, pdu := range oq.pendingEvents {
|
||||
for _, pdu := range pendingPDUs {
|
||||
// Append the JSON of the event, since this is a json.RawMessage type in the
|
||||
// gomatrixserverlib.Transaction struct
|
||||
t.PDUs = append(t.PDUs, (*pdu).JSON())
|
||||
}
|
||||
oq.pendingEvents = nil
|
||||
oq.sentCounter += len(t.PDUs)
|
||||
|
||||
for _, edu := range oq.pendingEDUs {
|
||||
for _, edu := range pendingEDUs {
|
||||
t.EDUs = append(t.EDUs, *edu)
|
||||
}
|
||||
oq.pendingEDUs = nil
|
||||
oq.sentCounter += len(t.EDUs)
|
||||
|
||||
util.GetLogger(context.TODO()).Infof("Sending transaction %q containing %d PDUs, %d EDUs", t.TransactionID, len(t.PDUs), len(t.EDUs))
|
||||
logrus.WithField("server_name", oq.destination).Infof("Sending transaction %q containing %d PDUs, %d EDUs", t.TransactionID, len(t.PDUs), len(t.EDUs))
|
||||
|
||||
// TODO: we should check for 500-ish fails vs 400-ish here,
|
||||
// since we shouldn't queue things indefinitely in response
|
||||
// to a 400-ish error
|
||||
_, err := oq.client.SendTransaction(context.TODO(), t)
|
||||
if err != nil {
|
||||
switch e := err.(type) {
|
||||
case nil:
|
||||
// No error was returned so the transaction looks to have
|
||||
// been successfully sent.
|
||||
return true, nil
|
||||
case gomatrix.HTTPError:
|
||||
// We received a HTTP error back. In this instance we only
|
||||
// should report an error if
|
||||
if e.Code >= 400 && e.Code <= 499 {
|
||||
// We tried but the remote side has sent back a client error.
|
||||
// It's no use retrying because it will happen again.
|
||||
return true, nil
|
||||
}
|
||||
// Otherwise, report that we failed to send the transaction
|
||||
// and we will retry again.
|
||||
return false, err
|
||||
default:
|
||||
log.WithFields(log.Fields{
|
||||
"destination": oq.destination,
|
||||
log.ErrorKey: err,
|
||||
}).Info("problem sending transaction")
|
||||
return false, err
|
||||
}
|
||||
|
||||
return true
|
||||
}
|
||||
|
||||
// nextInvite takes pending invite events from the queue and sends
|
||||
// them. Returns true if a transaction was sent or false otherwise.
|
||||
func (oq *destinationQueue) nextInvites() bool {
|
||||
oq.runningMutex.Lock()
|
||||
defer oq.runningMutex.Unlock()
|
||||
|
||||
if len(oq.pendingInvites) == 0 {
|
||||
return false
|
||||
}
|
||||
|
||||
for _, inviteReq := range oq.pendingInvites {
|
||||
func (oq *destinationQueue) nextInvites(
|
||||
pendingInvites []*gomatrixserverlib.InviteV2Request,
|
||||
) (int, error) {
|
||||
done := 0
|
||||
for _, inviteReq := range pendingInvites {
|
||||
ev, roomVersion := inviteReq.Event(), inviteReq.RoomVersion()
|
||||
|
||||
log.WithFields(log.Fields{
|
||||
@ -180,13 +289,32 @@ func (oq *destinationQueue) nextInvites() bool {
|
||||
oq.destination,
|
||||
*inviteReq,
|
||||
)
|
||||
if err != nil {
|
||||
switch e := err.(type) {
|
||||
case nil:
|
||||
done++
|
||||
case gomatrix.HTTPError:
|
||||
log.WithFields(log.Fields{
|
||||
"event_id": ev.EventID(),
|
||||
"state_key": ev.StateKey(),
|
||||
"destination": oq.destination,
|
||||
"status_code": e.Code,
|
||||
}).WithError(err).Error("failed to send invite due to HTTP error")
|
||||
// Check whether we should do something about the error or
|
||||
// just accept it as unavoidable.
|
||||
if e.Code >= 400 && e.Code <= 499 {
|
||||
// We tried but the remote side has sent back a client error.
|
||||
// It's no use retrying because it will happen again.
|
||||
done++
|
||||
continue
|
||||
}
|
||||
return done, err
|
||||
default:
|
||||
log.WithFields(log.Fields{
|
||||
"event_id": ev.EventID(),
|
||||
"state_key": ev.StateKey(),
|
||||
"destination": oq.destination,
|
||||
}).WithError(err).Error("failed to send invite")
|
||||
continue
|
||||
return done, err
|
||||
}
|
||||
|
||||
if _, err = oq.rsProducer.SendInviteResponse(
|
||||
@ -199,10 +327,9 @@ func (oq *destinationQueue) nextInvites() bool {
|
||||
"state_key": ev.StateKey(),
|
||||
"destination": oq.destination,
|
||||
}).WithError(err).Error("failed to return signed invite to roomserver")
|
||||
return done, err
|
||||
}
|
||||
}
|
||||
|
||||
oq.pendingInvites = nil
|
||||
|
||||
return true
|
||||
return done, nil
|
||||
}
|
||||
|
@ -19,18 +19,20 @@ import (
|
||||
"sync"
|
||||
|
||||
"github.com/matrix-org/dendrite/federationsender/producers"
|
||||
"github.com/matrix-org/dendrite/federationsender/types"
|
||||
"github.com/matrix-org/gomatrixserverlib"
|
||||
"github.com/matrix-org/util"
|
||||
log "github.com/sirupsen/logrus"
|
||||
)
|
||||
|
||||
// OutgoingQueues is a collection of queues for sending transactions to other
|
||||
// matrix servers
|
||||
type OutgoingQueues struct {
|
||||
rsProducer *producers.RoomserverProducer
|
||||
origin gomatrixserverlib.ServerName
|
||||
client *gomatrixserverlib.FederationClient
|
||||
// The queuesMutex protects queues
|
||||
queuesMutex sync.Mutex
|
||||
rsProducer *producers.RoomserverProducer
|
||||
origin gomatrixserverlib.ServerName
|
||||
client *gomatrixserverlib.FederationClient
|
||||
statistics *types.Statistics
|
||||
queuesMutex sync.Mutex // protects the below
|
||||
queues map[gomatrixserverlib.ServerName]*destinationQueue
|
||||
}
|
||||
|
||||
@ -39,15 +41,37 @@ func NewOutgoingQueues(
|
||||
origin gomatrixserverlib.ServerName,
|
||||
client *gomatrixserverlib.FederationClient,
|
||||
rsProducer *producers.RoomserverProducer,
|
||||
statistics *types.Statistics,
|
||||
) *OutgoingQueues {
|
||||
return &OutgoingQueues{
|
||||
rsProducer: rsProducer,
|
||||
origin: origin,
|
||||
client: client,
|
||||
statistics: statistics,
|
||||
queues: map[gomatrixserverlib.ServerName]*destinationQueue{},
|
||||
}
|
||||
}
|
||||
|
||||
func (oqs *OutgoingQueues) getQueue(destination gomatrixserverlib.ServerName) *destinationQueue {
|
||||
oqs.queuesMutex.Lock()
|
||||
defer oqs.queuesMutex.Unlock()
|
||||
oq := oqs.queues[destination]
|
||||
if oq == nil {
|
||||
oq = &destinationQueue{
|
||||
rsProducer: oqs.rsProducer,
|
||||
origin: oqs.origin,
|
||||
destination: destination,
|
||||
client: oqs.client,
|
||||
statistics: oqs.statistics.ForServer(destination),
|
||||
incomingPDUs: make(chan *gomatrixserverlib.HeaderedEvent, 128),
|
||||
incomingEDUs: make(chan *gomatrixserverlib.EDU, 128),
|
||||
incomingInvites: make(chan *gomatrixserverlib.InviteV2Request, 128),
|
||||
}
|
||||
oqs.queues[destination] = oq
|
||||
}
|
||||
return oq
|
||||
}
|
||||
|
||||
// SendEvent sends an event to the destinations
|
||||
func (oqs *OutgoingQueues) SendEvent(
|
||||
ev *gomatrixserverlib.HeaderedEvent, origin gomatrixserverlib.ServerName,
|
||||
@ -62,27 +86,14 @@ func (oqs *OutgoingQueues) SendEvent(
|
||||
}
|
||||
|
||||
// Remove our own server from the list of destinations.
|
||||
destinations = filterDestinations(oqs.origin, destinations)
|
||||
destinations = filterAndDedupeDests(oqs.origin, destinations)
|
||||
|
||||
log.WithFields(log.Fields{
|
||||
"destinations": destinations, "event": ev.EventID(),
|
||||
}).Info("Sending event")
|
||||
|
||||
oqs.queuesMutex.Lock()
|
||||
defer oqs.queuesMutex.Unlock()
|
||||
for _, destination := range destinations {
|
||||
oq := oqs.queues[destination]
|
||||
if oq == nil {
|
||||
oq = &destinationQueue{
|
||||
rsProducer: oqs.rsProducer,
|
||||
origin: oqs.origin,
|
||||
destination: destination,
|
||||
client: oqs.client,
|
||||
}
|
||||
oqs.queues[destination] = oq
|
||||
}
|
||||
|
||||
oq.sendEvent(ev)
|
||||
oqs.getQueue(destination).sendEvent(ev)
|
||||
}
|
||||
|
||||
return nil
|
||||
@ -111,23 +122,11 @@ func (oqs *OutgoingQueues) SendInvite(
|
||||
}
|
||||
|
||||
log.WithFields(log.Fields{
|
||||
"event_id": ev.EventID(),
|
||||
"event_id": ev.EventID(),
|
||||
"server_name": destination,
|
||||
}).Info("Sending invite")
|
||||
|
||||
oqs.queuesMutex.Lock()
|
||||
defer oqs.queuesMutex.Unlock()
|
||||
oq := oqs.queues[destination]
|
||||
if oq == nil {
|
||||
oq = &destinationQueue{
|
||||
rsProducer: oqs.rsProducer,
|
||||
origin: oqs.origin,
|
||||
destination: destination,
|
||||
client: oqs.client,
|
||||
}
|
||||
oqs.queues[destination] = oq
|
||||
}
|
||||
|
||||
oq.sendInvite(inviteReq)
|
||||
oqs.getQueue(destination).sendInvite(inviteReq)
|
||||
|
||||
return nil
|
||||
}
|
||||
@ -146,7 +145,7 @@ func (oqs *OutgoingQueues) SendEDU(
|
||||
}
|
||||
|
||||
// Remove our own server from the list of destinations.
|
||||
destinations = filterDestinations(oqs.origin, destinations)
|
||||
destinations = filterAndDedupeDests(oqs.origin, destinations)
|
||||
|
||||
if len(destinations) > 0 {
|
||||
log.WithFields(log.Fields{
|
||||
@ -154,35 +153,27 @@ func (oqs *OutgoingQueues) SendEDU(
|
||||
}).Info("Sending EDU event")
|
||||
}
|
||||
|
||||
oqs.queuesMutex.Lock()
|
||||
defer oqs.queuesMutex.Unlock()
|
||||
for _, destination := range destinations {
|
||||
oq := oqs.queues[destination]
|
||||
if oq == nil {
|
||||
oq = &destinationQueue{
|
||||
rsProducer: oqs.rsProducer,
|
||||
origin: oqs.origin,
|
||||
destination: destination,
|
||||
client: oqs.client,
|
||||
}
|
||||
oqs.queues[destination] = oq
|
||||
}
|
||||
|
||||
oq.sendEDU(e)
|
||||
oqs.getQueue(destination).sendEDU(e)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// filterDestinations removes our own server from the list of destinations.
|
||||
// Otherwise we could end up trying to talk to ourselves.
|
||||
func filterDestinations(origin gomatrixserverlib.ServerName, destinations []gomatrixserverlib.ServerName) []gomatrixserverlib.ServerName {
|
||||
var result []gomatrixserverlib.ServerName
|
||||
for _, destination := range destinations {
|
||||
if destination == origin {
|
||||
// filterAndDedupeDests removes our own server from the list of destinations
|
||||
// and deduplicates any servers in the list that may appear more than once.
|
||||
func filterAndDedupeDests(origin gomatrixserverlib.ServerName, destinations []gomatrixserverlib.ServerName) (
|
||||
result []gomatrixserverlib.ServerName,
|
||||
) {
|
||||
strs := make([]string, len(destinations))
|
||||
for i, d := range destinations {
|
||||
strs[i] = string(d)
|
||||
}
|
||||
for _, destination := range util.UniqueStrings(strs) {
|
||||
if gomatrixserverlib.ServerName(destination) == origin {
|
||||
continue
|
||||
}
|
||||
result = append(result, destination)
|
||||
result = append(result, gomatrixserverlib.ServerName(destination))
|
||||
}
|
||||
return result
|
||||
}
|
||||
|
122
federationsender/types/statistics.go
Normal file
122
federationsender/types/statistics.go
Normal file
@ -0,0 +1,122 @@
|
||||
package types
|
||||
|
||||
import (
|
||||
"math"
|
||||
"sync"
|
||||
"time"
|
||||
|
||||
"github.com/matrix-org/gomatrixserverlib"
|
||||
"go.uber.org/atomic"
|
||||
)
|
||||
|
||||
const (
|
||||
// How many times should we tolerate consecutive failures before we
|
||||
// just blacklist the host altogether? Bear in mind that the backoff
|
||||
// is exponential, so the max time here to attempt is 2**failures.
|
||||
FailuresUntilBlacklist = 16 // 16 equates to roughly 18 hours.
|
||||
)
|
||||
|
||||
// Statistics contains information about all of the remote federated
|
||||
// hosts that we have interacted with. It is basically a threadsafe
|
||||
// wrapper.
|
||||
type Statistics struct {
|
||||
servers map[gomatrixserverlib.ServerName]*ServerStatistics
|
||||
mutex sync.RWMutex
|
||||
}
|
||||
|
||||
// ForServer returns server statistics for the given server name. If it
|
||||
// does not exist, it will create empty statistics and return those.
|
||||
func (s *Statistics) ForServer(serverName gomatrixserverlib.ServerName) *ServerStatistics {
|
||||
// If the map hasn't been initialised yet then do that.
|
||||
if s.servers == nil {
|
||||
s.mutex.Lock()
|
||||
s.servers = make(map[gomatrixserverlib.ServerName]*ServerStatistics)
|
||||
s.mutex.Unlock()
|
||||
}
|
||||
// Look up if we have statistics for this server already.
|
||||
s.mutex.RLock()
|
||||
server, found := s.servers[serverName]
|
||||
s.mutex.RUnlock()
|
||||
// If we don't, then make one.
|
||||
if !found {
|
||||
s.mutex.Lock()
|
||||
server = &ServerStatistics{}
|
||||
s.servers[serverName] = server
|
||||
s.mutex.Unlock()
|
||||
}
|
||||
return server
|
||||
}
|
||||
|
||||
// ServerStatistics contains information about our interactions with a
|
||||
// remote federated host, e.g. how many times we were successful, how
|
||||
// many times we failed etc. It also manages the backoff time and black-
|
||||
// listing a remote host if it remains uncooperative.
|
||||
type ServerStatistics struct {
|
||||
blacklisted atomic.Bool // is the remote side dead?
|
||||
backoffUntil atomic.Value // time.Time to wait until before sending requests
|
||||
failCounter atomic.Uint32 // how many times have we failed?
|
||||
successCounter atomic.Uint32 // how many times have we succeeded?
|
||||
}
|
||||
|
||||
// Success updates the server statistics with a new successful
|
||||
// attempt, which increases the sent counter and resets the idle and
|
||||
// failure counters. If a host was blacklisted at this point then
|
||||
// we will unblacklist it.
|
||||
func (s *ServerStatistics) Success() {
|
||||
s.successCounter.Add(1)
|
||||
s.failCounter.Store(0)
|
||||
s.blacklisted.Store(false)
|
||||
}
|
||||
|
||||
// Failure marks a failure and works out when to backoff until. It
|
||||
// returns true if the worker should give up altogether because of
|
||||
// too many consecutive failures. At this point the host is marked
|
||||
// as blacklisted.
|
||||
func (s *ServerStatistics) Failure() bool {
|
||||
// Increase the fail counter.
|
||||
failCounter := s.failCounter.Add(1)
|
||||
|
||||
// Check that we haven't failed more times than is acceptable.
|
||||
if failCounter >= FailuresUntilBlacklist {
|
||||
// We've exceeded the maximum amount of times we're willing
|
||||
// to back off, which is probably in the region of hours by
|
||||
// now. Mark the host as blacklisted and tell the caller to
|
||||
// give up.
|
||||
s.blacklisted.Store(true)
|
||||
return true
|
||||
}
|
||||
|
||||
// We're still under the threshold so work out the exponential
|
||||
// backoff based on how many times we have failed already. The
|
||||
// worker goroutine will wait until this time before processing
|
||||
// anything from the queue.
|
||||
backoffSeconds := time.Second * time.Duration(math.Exp2(float64(failCounter)))
|
||||
s.backoffUntil.Store(
|
||||
time.Now().Add(backoffSeconds),
|
||||
)
|
||||
return false
|
||||
}
|
||||
|
||||
// BackoffDuration returns both a bool stating whether to wait,
|
||||
// and then if true, a duration to wait for.
|
||||
func (s *ServerStatistics) BackoffDuration() (bool, time.Duration) {
|
||||
backoff, until := false, time.Second
|
||||
if b, ok := s.backoffUntil.Load().(time.Time); ok {
|
||||
if b.After(time.Now()) {
|
||||
backoff, until = true, time.Until(b)
|
||||
}
|
||||
}
|
||||
return backoff, until
|
||||
}
|
||||
|
||||
// Blacklisted returns true if the server is blacklisted and false
|
||||
// otherwise.
|
||||
func (s *ServerStatistics) Blacklisted() bool {
|
||||
return s.blacklisted.Load()
|
||||
}
|
||||
|
||||
// SuccessCount returns the number of successful requests. This is
|
||||
// usually useful in constructing transaction IDs.
|
||||
func (s *ServerStatistics) SuccessCount() uint32 {
|
||||
return s.successCounter.Load()
|
||||
}
|
@ -58,15 +58,22 @@ func (r *RoomserverInternalAPI) InputRoomEvents(
|
||||
// We lock as processRoomEvent can only be called once at a time
|
||||
r.mutex.Lock()
|
||||
defer r.mutex.Unlock()
|
||||
for i := range request.InputInviteEvents {
|
||||
var loopback *api.InputRoomEvent
|
||||
if loopback, err = processInviteEvent(ctx, r.DB, r, request.InputInviteEvents[i]); err != nil {
|
||||
return err
|
||||
}
|
||||
// The processInviteEvent function can optionally return a
|
||||
// loopback room event containing the invite, for local invites.
|
||||
// If it does, we should process it with the room events below.
|
||||
if loopback != nil {
|
||||
request.InputRoomEvents = append(request.InputRoomEvents, *loopback)
|
||||
}
|
||||
}
|
||||
for i := range request.InputRoomEvents {
|
||||
if response.EventID, err = processRoomEvent(ctx, r.DB, r, request.InputRoomEvents[i]); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
for i := range request.InputInviteEvents {
|
||||
if err = processInviteEvent(ctx, r.DB, r, request.InputInviteEvents[i]); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
@ -18,6 +18,7 @@ package internal
|
||||
|
||||
import (
|
||||
"context"
|
||||
"errors"
|
||||
"fmt"
|
||||
|
||||
"github.com/matrix-org/dendrite/common"
|
||||
@ -132,11 +133,11 @@ func calculateAndSetState(
|
||||
func processInviteEvent(
|
||||
ctx context.Context,
|
||||
db storage.Database,
|
||||
ow OutputRoomEventWriter,
|
||||
ow *RoomserverInternalAPI,
|
||||
input api.InputInviteEvent,
|
||||
) (err error) {
|
||||
) (*api.InputRoomEvent, error) {
|
||||
if input.Event.StateKey() == nil {
|
||||
return fmt.Errorf("invite must be a state event")
|
||||
return nil, fmt.Errorf("invite must be a state event")
|
||||
}
|
||||
|
||||
roomID := input.Event.RoomID()
|
||||
@ -151,7 +152,7 @@ func processInviteEvent(
|
||||
|
||||
updater, err := db.MembershipUpdater(ctx, roomID, targetUserID, input.RoomVersion)
|
||||
if err != nil {
|
||||
return err
|
||||
return nil, err
|
||||
}
|
||||
succeeded := false
|
||||
defer func() {
|
||||
@ -189,17 +190,27 @@ func processInviteEvent(
|
||||
// For now we will implement option 2. Since in the abesence of a retry
|
||||
// mechanism it will be equivalent to option 1, and we don't have a
|
||||
// signalling mechanism to implement option 3.
|
||||
return nil
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
// Normally, with a federated invite, the federation sender would do
|
||||
// the /v2/invite request (in which the remote server signs the invite)
|
||||
// and then the signed event gets sent back to the roomserver as an input
|
||||
// event. When the invite is local, we don't interact with the federation
|
||||
// sender therefore we need to generate the loopback invite event for
|
||||
// the room ourselves.
|
||||
loopback, err := localInviteLoopback(ow, input)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
event := input.Event.Unwrap()
|
||||
|
||||
if len(input.InviteRoomState) > 0 {
|
||||
// If we were supplied with some invite room state already (which is
|
||||
// most likely to be if the event came in over federation) then use
|
||||
// that.
|
||||
if err = event.SetUnsignedField("invite_room_state", input.InviteRoomState); err != nil {
|
||||
return err
|
||||
return nil, err
|
||||
}
|
||||
} else {
|
||||
// There's no invite room state, so let's have a go at building it
|
||||
@ -208,22 +219,52 @@ func processInviteEvent(
|
||||
// the invite room state, if we don't then we just fail quietly.
|
||||
if irs, ierr := buildInviteStrippedState(ctx, db, input); ierr == nil {
|
||||
if err = event.SetUnsignedField("invite_room_state", irs); err != nil {
|
||||
return err
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
outputUpdates, err := updateToInviteMembership(updater, &event, nil, input.Event.RoomVersion)
|
||||
if err != nil {
|
||||
return err
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if err = ow.WriteOutputEvents(roomID, outputUpdates); err != nil {
|
||||
return err
|
||||
return nil, err
|
||||
}
|
||||
|
||||
succeeded = true
|
||||
return nil
|
||||
return loopback, nil
|
||||
}
|
||||
|
||||
func localInviteLoopback(
|
||||
ow *RoomserverInternalAPI,
|
||||
input api.InputInviteEvent,
|
||||
) (ire *api.InputRoomEvent, err error) {
|
||||
if input.Event.StateKey() == nil {
|
||||
return nil, errors.New("no state key on invite event")
|
||||
}
|
||||
ourServerName := string(ow.Cfg.Matrix.ServerName)
|
||||
_, theirServerName, err := gomatrixserverlib.SplitID('@', *input.Event.StateKey())
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
// Check if the invite originated locally and is destined locally.
|
||||
if input.Event.Origin() == ow.Cfg.Matrix.ServerName && string(theirServerName) == ourServerName {
|
||||
rsEvent := input.Event.Sign(
|
||||
ourServerName,
|
||||
ow.Cfg.Matrix.KeyID,
|
||||
ow.Cfg.Matrix.PrivateKey,
|
||||
).Headered(input.RoomVersion)
|
||||
ire = &api.InputRoomEvent{
|
||||
Kind: api.KindNew,
|
||||
Event: rsEvent,
|
||||
AuthEventIDs: rsEvent.AuthEventIDs(),
|
||||
SendAsServer: ourServerName,
|
||||
TransactionID: nil,
|
||||
}
|
||||
}
|
||||
return ire, nil
|
||||
}
|
||||
|
||||
func buildInviteStrippedState(
|
||||
|
Loading…
Reference in New Issue
Block a user